Dogs play in Berkeley for the last day of the year at Berekely Pool in Denver, Colorado

DENVER, CO - AUGUST- Eva, a chihuahua, with the guidance of her owner Barry Crumrine, tries out the water in the kiddie pool for the first time ever at Berkeley Pool on August 27, 2017 in Denver, Colorado. As summer comes to an end many pools such as Berkeley Pool opened up their pools for local dogs to enjoy cooling off and playing with other dogs in the water. Organizers said this was the most amount of people and their dogs that they had ever seen come out for the popular event. (Photo by Helen H. Richardson/The Denver Post via Getty Images)